全文获取类型
收费全文 | 24974篇 |
免费 | 1223篇 |
专业分类
各国政治 | 898篇 |
工人农民 | 1741篇 |
世界政治 | 1297篇 |
外交国际关系 | 798篇 |
法律 | 16543篇 |
中国共产党 | 2篇 |
中国政治 | 105篇 |
政治理论 | 4724篇 |
综合类 | 89篇 |
出版年
2023年 | 76篇 |
2021年 | 86篇 |
2020年 | 427篇 |
2019年 | 445篇 |
2018年 | 1749篇 |
2017年 | 1699篇 |
2016年 | 1600篇 |
2015年 | 561篇 |
2014年 | 544篇 |
2013年 | 1805篇 |
2012年 | 647篇 |
2011年 | 1354篇 |
2010年 | 1471篇 |
2009年 | 1093篇 |
2008年 | 1188篇 |
2007年 | 1140篇 |
2006年 | 522篇 |
2005年 | 489篇 |
2004年 | 598篇 |
2003年 | 491篇 |
2002年 | 426篇 |
2001年 | 672篇 |
2000年 | 607篇 |
1999年 | 482篇 |
1998年 | 246篇 |
1997年 | 182篇 |
1996年 | 209篇 |
1995年 | 215篇 |
1994年 | 187篇 |
1993年 | 176篇 |
1992年 | 304篇 |
1991年 | 311篇 |
1990年 | 294篇 |
1989年 | 276篇 |
1988年 | 304篇 |
1987年 | 262篇 |
1986年 | 320篇 |
1985年 | 317篇 |
1984年 | 254篇 |
1983年 | 234篇 |
1982年 | 181篇 |
1981年 | 154篇 |
1980年 | 143篇 |
1979年 | 225篇 |
1978年 | 122篇 |
1977年 | 101篇 |
1975年 | 94篇 |
1974年 | 124篇 |
1973年 | 79篇 |
1972年 | 79篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
821.
Sizhe Huang Ph.D. Rongshuai Wang Ph.D. Bingbing Guo M.Bs. Hongbin Ruan M.Bs. Jinghong Ma M.M. Liang Ren Ph.D. Liang Liu Ph.D. 《Journal of forensic sciences》2020,65(3):1016-1022
Methyl nitrite is suggested to cause methemoglobinemia by generating methemoglobin, which may be lethal when the methemoglobin concentration exceeds 70%. However, intoxication with methyl nitrite is seldom reported compared with that with other nitrites. Here, we present an industrial accident involving methyl nitrite inhalation during its synthesis process that resulted in three fatalities and one survivor. The autopsy revealed conspicuous blue-gray discoloration in various parts of the body, including the skin, airway mucosa, vessels, brain, heart, and among other areas. The toxicological tests on the deceased showed methemoglobin concentrations in the blood over the lethal level and increased nitrite ion levels in the blood, gastric contents, liver, and lung tissue compared with those in control samples. The cause of death was determined to be methemoglobinemia-induced hypoxia due to methyl nitrite inhalation. This report provides evidence that in methyl nitrite intoxication, exposure duration has a significant influence on the postmortem changes and likelihood of a fatal outcome may be related to the age of the victim. More attention is required regarding the industrial hazards of this substance. 相似文献
822.
Sabrina Zorbo M.S. Patrick P. J. M. H. Jeuniaux Ph.D. 《Journal of forensic sciences》2020,65(2):641-648
In the case of suspicious deaths, the technique of 1:1 taping is often used in Belgium. It consists of affixing a large number of adhesive tapes to the body of the victim. It is conventionally aimed at obtaining microtraces (e.g., fibers, hair) and is usually not used for DNA analysis. However, in some cases, DNA analysis of certain areas of interest identified on the 1:1 taping material can offer a last resort solution. The four-step method that is described in this article involves the selection of areas of interest on the body (Step 1), the selection of the corresponding tapes (Step 2), the decontamination of the tapes (Step 3), the selection of areas of interest on the tapes, for DNA sampling (Step 4). The method is illustrated by its successful application in four murder cases. In each case, DNA profiles of good quality could be identified, including profiles of persons different from the victim. 相似文献
823.
Josh M. Ryan 《Legislative Studies Quarterly》2020,45(3):365-396
The ability of the minority party to influence legislation in Congress is debated. Most bills are passed with large bipartisan majorities, yet the House, where most legislation is developed, is seen as a majority-party-dominated institution. I develop a theory of House minority-party influence at the committee markup stage as a result of the Senate’s institutional rules. An original data set of congressional committee votes shows that minority-party support in House committees predicts House and Senate passage. During unified party control of the chambers, an increase in Senate majority-party seats results in lower minority-party support for the legislation in the House committee, while during divided party control of Congress, the House majority passes more extreme bills as the chambers polarize. Even in the majority-party-dominated House, the minority’s preferences are incorporated into legislation, and the Senate’s institutional rules moderate bills to a significant degree. 相似文献
824.
Social Justice Research - A cross-national study with university students from Germany (n?=?1135) and Turkey (n?=?634) tested whether personal belief in a just world (PBJW)... 相似文献
825.
ABSTRACTStudies have demonstrated the efficacy of the Scharff technique for gathering human intelligence, but little is known about how this efficacy might vary among different samples of practitioners. In this training study we examined a sample of military officers (n?=?37). Half was trained in the Scharff technique and compared against officers receiving no Scharff training. All officers received the same case file describing two sources holding information about a terrorist attack. University students (n?=?74) took the role of the semi-cooperative sources. Scharff-trained officers adhered to the training as they (1) aimed to establish the ‘knowing-it-all’ illusion, (2) posed claims as a means of eliciting information, and (3) asked fewer explicit questions. The ‘untrained’ officers asked many explicit questions, questioned the reliability of the provided information, pressured the source, and displayed disappointment with the source's contribution. Scharff-trained officers were perceived as less eager to gather information and left their sources with the impression of having provided comparatively less new information, but collected a similar amount of new information as their untrained colleagues. The present paper both replicates and advances previous work in the field, and marks the Scharff technique as a promising technique for gathering human intelligence. 相似文献
826.
Neil M. McLatchie Lara Warmelink Daria Tkacheva 《Legal and Criminological Psychology》2020,25(2):72-79
Bayes factors provide a continuous measure of evidence for one hypothesis (e.g., the null, H0) relative to another (e.g., the alternative, H1). Warmelink et al. (2019, Legal Criminol Psychol, 24, 258) reported Bayes factors alongside p‐values to draw inferences about whether the order of expected versus unexpected questions influenced the amount of details interviewees provided during an interview. Mac Giolla & Ly (2019) provided several recommendations to improve the reporting of Bayesian analyses and used Warmelink et al. (2019) as a concrete example. These included (I) not to over‐rely on cut‐offs when interpreting Bayes factors; (II) to rely less on Bayes factors, and switch to ‘nominal support’; and (III) to report the posterior distribution. This paper elaborates on their recommendations and provides two further suggestions for improvement. First, we recommend deception researchers report Robustness Regions to demonstrate the sensitivity of their conclusions to the model of H1 used. Second, we demonstrate a method that deception researchers can use to estimate, a priori, the sample size likely to be required to provide conclusive evidence. 相似文献
827.
828.
Parenting Coordination is a “hybrid legal‐mental health role that combines assessment, education, case management, conflict management, dispute resolution and, often times, decision‐making functions (AFCC, 2019, https://www.afccnet.org/Portals/0/PublicDocuments/Guidelines%20for%20PC%20with%20Appendex.pdf?ver=2020-01-30-190220-990 ). This article addresses issues that arise when the case has allegations or findings of intimate partner violence (IPV). Considerations of the type of IPV, the severity, timing, perpetrator and effects on coparenting are discussed in the context of the parenting coordinator's role. Through screening and assessment, we differentiate the kinds of cases with the presence of IPV where a PC may be effective as opposed to other IPV cases that may not predict success for retaining a PC. 相似文献
829.
830.
Jolien Trekels Kathrin Karsay Steven Eggermont Laura Vandenbosch 《Journal of youth and adolescence》2018,47(7):1440-1455
Although media exposure has been related to cognitive preoccupation with appearance, research rarely investigated adolescents’ behavioral self-sexualization. To address this gap, the present study among 12- to 16-year-olds (N?=?1527; 50.2% girls) in Austria, Belgium, Spain, and South-Korea (1) investigates whether different types of media use relate to self-sexualization, (2) explores the explanatory value of rewarded appearance ideals, and (3) considers culture and gender as moderating factors. Despite cultural variation, a general trend of increasing self-sexualization with social media use and magazine reading appeared across the countries. Moreover, women’s magazine reading and rewards were related to self-sexualization among all the girls across the countries, which suggests that girls may be more vulnerable to the examined effects. Overall, this study provides a better understanding of the unique contribution of specific media genres to youth’s self-sexualization and points at the importance of social media use in girls’ and boys’ engagement in sexualizing appearance behaviors across four countries. 相似文献